Scientific Notes

Infestation of volvulus (Fabricius) (Coleoptera: : Scolytinae) inMangifera indica L. (Mangifera: Anacardiaceae) in Manzanillo, Colima

Jesús E. Castrejón-Antonio1, Roberto Montesinos-Matías2,*, Patricia Tamez-Guerra1, Lucía T. Fuentes Guardiola2, Bruno Laureano-Ahuelican3, and Hugo C. Arredondo- Bernal2

Ambrosia are a natural part of the wood decomposition ease. Among the secondary vectors, X. volvulus (Eichhoff) stands processes in ecosystems; however, some exotic can cause seri- out because in laboratory tests it has been demonstrated that it ous problems in economically important crops, or seriously threaten can transmit R. lauricola to . Thus, the possibility of this native plant species (Sobel et al. 2015). Outstanding examples con- occurring in the field cannot be discarded (Carrillo et al. 2014). Re- firming this are the introduction of Xyleborus glabratus Eichhoff (Co- cently, the presence of X. volvulus was observed in avocado trees in leoptera: Curculionidae: Scolytinae) and Euwallacea sp. (Coleoptera: Colima, Mexico (Castrejón-Antonio et al. 2017), and another report Curculionidae: Scolytinae) ambrosia beetles (Pisani et al. 2015), native indicates its ability to infest Mexican cedar trees (Cedrela odorata to Asia, but introduced into the USA near Savannah, Georgia. This has L.) and cacao (Theobroma cacao L.) (Pérez-De la Cruz et al. 2009; resulted in the death of more than 500 million trees of the family Lau- Rangel et al. 2012). raceae (Peña et al. 2012), including avocado trees, Persea americana Since Apr 2015, periodic observations have been made in a man- Miller (). These beetles are characterized by their symbiotic go orchard (Mangifera indica L., var ‘Ataulfo’) (Anacardiaceae) in as- and nutritional relationship with fungi that grow on the walls of their sociation with avocado (var ‘Mendez’) in Manzanillo, Colima, Mexico galleries, which are located in the xylem of host trees (Hughes et al. (19.02663°N, 104.09755°W, 23 m asl); the were felled in Mar 2015). The fungal growth inside the vascular system of living trees hin- 2016 after being damaged by ambrosia beetles (Castrejón-Antonio et ders the flow of water and nutrients, resulting in injury or mortality al. 2017). In Apr 2017, during a survey in the same orchard, mango of many host plant species in a short period of time (Fraedrich et al. trees with leaf wilt throughout the canopy, ambrosia galleries 2008). The X. glabratus beetle transmits the fungus lauricola and frass on the main trunk were observed (Fig. 1). Pieces of wood TC Harr., Fraedrich & Aghayeva (Ophiostomatales: Ophiostomataceae), were collected and placed in emergence chambers (26 °C, 60% RH, that causes an affliction known as disease (Harrington et 14:10 [L:D] photoperiod). The that emerged from the wood al. 2008). A second exotic species is the polyphagous shot hole borer were collected, assembled, labeled, and sent to the Departamento Euwallacea sp., an that transmits the fungi Fusarium de Entomología y Acarología del Centro Nacional de Referencia Fitos- euwallaceae (S. Freeman, Z. Mendel, T. Aoki & O’Donnell), Graphium anitaria (CNRF) de la Dirección General de Sanidad Vegetal (SENASICA- euwallaceae (Twizeyimana, S.C. Lynch & Eskalen), and Acremonium SAGARPA) for identification. The beetles were identified using the taxo- pembeum (S. C. Lynch & Eskalen) that commonly cause “fusarium die- nomic keys described by Wood (1982), as Hypocryphalus mangiferae back” in many plant species. Stebbing and Xyleborus volvulus F. (Fig. 2). The presence of E. nr. fornicatus has been reported in host plants The mango tree is known to be a host of X. volvulus (Atkinson throughout the city of Tijuana, Baja California, Mexico (García-Avila et 2017); however, damage by this beetle had not been reported previ- al. 2016). However, the presence of X. glabratus has not been reported ously in Mexico. The case described here demonstrates the susceptibil- in Mexico (SENASICA 2017). ity of the mango tree to X. volvulus. Furthermore, this particular case In relation to the X. glabratus symbiont, R. lauricola can be car- also demonstrates that ambrosia beetles can infest 1 host tree species ried by secondary vectors, thus facilitating the spread of the dis- and migrate to other host species trees in a 2-cultivar orchard.

1Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Unidad de Formulación de Biológicos, San Nicolás de los Garza, Nuevo León, Mexico; E-mail: [email protected] (J. E. C. A.); [email protected] (P. T. G.) 2Centro Nacional de Referencia de Control Biológico (CNRF-DGSV-SENASICA) Tecomán, Colima, Mexico; E-mails: [email protected] (R. M. M.); [email protected] (L. T. F. G.); [email protected] (H. C. A. B.) 3Programa de Vigilancia Epidemiológica Fitosanitaria. Centro Nacional de Referencia Fitosanitaria, CNRF-DGSV-SENASICA, Tecámac, Estado de Mexico, Mexico; E-mail: [email protected] (B. L. A.) *Corresponding author; E-mail: [email protected]

676 2018 — Florida Entomologist — Volume 101, No. 4 Scientific Notes 677

Fig. 1. Ambrosia beetle galleries on a mango tree trunk. 678 2018 — Florida Entomologist — Volume 101, No. 4

Fig. 2. Xyleborus volvulus found infesting a mango tree: (a) dorsal; (b) lateral; (c) frontal; (d) posterolateral.

Summary Palabras Clave: escarabajos ambrosiales; cultivos mixtos; Hypo- cryphalus mangiferae Xyleborus volvulus is a polyphagous beetle that can carry Raffaelea lauricola, a phytopathogenic fungus that causes laurel wilt disease. In Acknowledgments Mexico, the has been associated with damage to cedar, cacao, and avocado plantations. Here, we report mango trees infested by X. To “Comité Estatal de Sanidad Vegetal del Estado de Colima (CE- volvulus in a mango orchard with a history of having avocado trees SAVECOL)” for providing facilities and access to vegetable gardens; were removed due to infestation by X. volvulus. to Ing. Rigoberto González Gómez and Biol. Nallely Acevedo Reyes of Key Words: ambrosia beetles; mixed orchard; Hypocryphalus man- “Centro Nacional de Referencia Fitosanitaria (Dirección General de giferae Sanidad Vegetal- SENASICA)” for their support identifying beetle sam- ples; and finally the authors also would like to thank Jr. Spec. Adrian Sumario Poloni for suggestions to improve the manuscript.

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